4.3b & 4 Bt
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Transcript of 4.3b & 4 Bt
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Agenda Thursday, Nov. 12
homework 4 p. 193 # 21 - 24, 34 - 40 and p. 198 # 13 - 23
Quiz tomorrow on Ch. 4.1 - 4.4 (see checkpoint quiz p. 199 for sample problems)
4.3 - prime factorization with variable expressions4.4- simplifying fractions
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Find the GCF of a variable expression.
Find the prime factorization of the coefficient.Write the variables in expanded form. Find common factors.
Example8xy2 and 6x3y
2*2*2*x*y*y 2*3*x*x*x*y
GCF = 2xy
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Prime Factors of 4a3b
Prime Factors of 6a2b2
4a3b = 2*2*a*a*a*b
6a2b2 = 2*3*a*a*b*b
Find the prime factorization of each variable expression. Use the diagram below to show the prime factors. Then use it to find the GCF.
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Directions: Use Venn diagrams to find the GCF of each set of numbers.
1) 4xy2, 2x2y GCF = 2xy
2) 6a2b2, 4ab3 GCF = 2ab2
3) 10m3n, 15m2n2 GCF = 5m2n
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Review with a Quiz
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Find two fractions that are equivalent to
4646
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Write in simplest form:
1218
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To write algebraic fractions in simplest form, first write the prime factorization of the expression.
Then divide the numerator and denominator by the common factors.
9 x 3*3*x3xy 3*x*y
4ab2 2*2*a*b*b16ac 2*2*2*2*a*c
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